Government of the United Kingdom - University Hospitals of North Midlands, Institute of Cancer Research (ICR) - Clinical Trials and Statistics Unit (ICR-CTSU), Royal Cornwall Hospital, The Institute of Cancer Research–Clinical Trials and Statistics Unit, University of Glasgow - Beatson West of Scotland Cancer Centre, University of Sussex - Brighton and Sussex Medical School, Nuffield Health Cheltenham Hospital, Worcestershire Acute Hospitals NHS Trust, Imperial Healthcare NHS Trust, University of Cambridge, Royal Devon and Exeter NHS Foundation Trust, NHS Foundation Trust - Norfolk and Norwich University Hospital, Institute of Cancer Research (ICR) - Clinical Trials and Statistics Unit (ICR-CTSU), Institute of Cancer Research (ICR) - Radiotherapy and Imaging, The University of Manchester - Division of Cancer Sciences, Independent Cancer Patients' Voice, Government of the United Kingdom, Department of Health, National Health Service (NHS), Mount Vernon Cancer Centre Northwood, Guy's and St Thomas' NHS Foundation Trust, Government of the United Kingdom - Royal Marsden NHS Foundation Trust, The Institute of Cancer Research–Clinical Trials and Statistics Unit, Clatterbridge Cancer Centre, Institute of Cancer Research (ICR) - Clinical Trials and Statistics Unit (ICR-CTSU), Institute of Cancer Research (ICR) - Radiotherapy and Imaging and Independent